EP 2491510 B1 20160824 - DISTRIBUTION SYSTEM AND METHOD FOR DISTRIBUTING DIGITAL INFORMATION
Title (en)
DISTRIBUTION SYSTEM AND METHOD FOR DISTRIBUTING DIGITAL INFORMATION
Title (de)
VERTEILUNGSSYSTEM UND VERFAHREN ZUR VERTEILUNG VON DIGITALEN INFORMATIONEN
Title (fr)
SYSTÈME ET PROCÉDÉ DE DISTRIBUTION POUR DISTRIBUER DES INFORMATIONS NUMÉRIQUES
Publication
Application
Priority
- EP 09173691 A 20091021
- EP 2010065767 W 20101020
- EP 10765810 A 20101020
Abstract (en)
[origin: WO2011048126A1] A distribution system and method for distributing digital information is provided, which has high recoverability from a security breach. The distribution system comprises a server (200) and a computing device (110). During an enrollment phase, the computing device obtains a first response from an integrated physically unclonable function (150) integrated in the computing device. The system comprises an enrollment module (130) for determining helper data from a decryption key and the first response to enable later reconstruction of the decryption key from the helper data and a second response obtained from the physically unclonable function. During a reconstruction phase, which occurs after the enrollment phase and typically after a security breach has occurred that revealed data and/or programming code of the computing device, the server may encrypt digital information using an encryption module (220) with a cryptographic encryption key corresponding to the decryption key. The computing device comprises a decryption module (120) for decrypting the encrypted digital information with the decryption key. The digital information may be used to send an update message to the computing device. Since, the decryption key need only be available at the computing device after the breach, it can recover even if data, such as a cryptographic key, or programming code of the computing device was revealed, and even if an attacker could eavesdrop on the encrypted digital information.
IPC 8 full level
G06F 21/10 (2013.01); H04L 9/08 (2006.01); H04L 9/32 (2006.01)
CPC (source: EP US)
G06F 21/1014 (2023.08 - EP); G06F 21/107 (2023.08 - EP); H04L 9/0866 (2013.01 - EP US); H04L 9/3278 (2013.01 - EP US); G06F 21/1014 (2023.08 - US); G06F 21/107 (2023.08 - US); H04L 9/08 (2013.01 - US); H04L 9/32 (2013.01 - US); H04L 9/3271 (2013.01 - US); H04L 2209/34 (2013.01 - EP US); H04L 2209/60 (2013.01 - EP US); H04L 2209/80 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2011048126 A1 20110428; EP 2491510 A1 20120829; EP 2491510 B1 20160824; US 2012204023 A1 20120809; US 8819409 B2 20140826
DOCDB simple family (application)
EP 2010065767 W 20101020; EP 10765810 A 20101020; US 201013501875 A 20101020